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Renesas HZ9C2-90-E
- Part No.:
- HZ9C2-90-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
HZ9C2-90-E.pdf
- Description:
- DIODE ZENER 9V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:28,000
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Product details
Overview
HZ9C2-90-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, with a nominal zener voltage of 9.3 V (min) to 9.7 V (max) at 0.5 mA test current, 60 Ω dynamic impedance, and 400 mW power dissipation in DO-35 package - used in regulated power supplies, sensor biasing, and ADC reference circuits.
For engineers reviewing the HZ9C2-90-E datasheet, HZ9C2-90-E pinout, HZ9C2-90-E application, or HZ9C2-90-E equivalent, key selection criteria include zener voltage tolerance (±0.2 V), low noise performance (1/3–1/10 that of standard HZ series), temperature coefficient (−0.04 %/°C typical), and DO-35 mechanical compatibility for through-hole PCB assembly.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across varying load currents via controlled reverse-bias breakdown. Its low dynamic resistance (60 Ω at IZ = 0.5 mA) ensures minimal voltage deviation under transient load changes.
Designed for low-noise applications, the HZ9C2-90-E achieves reduced diode noise through optimized silicon planar junction processing - distinct from standard Zener diodes - and exhibits a negative temperature coefficient (−0.04 %/°C) suitable for compensation in mixed-temperature environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.3 V (min) to 9.7 V (max) at IZ = 0.5 mA - defines stable regulation point for precision reference design |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 0.5 mA - enables tight voltage regulation under small-signal load variations |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact through-hole layouts without forced cooling |
| Reverse Leakage (IR) | 1 μA max at VR = 7.5 V - minimizes parasitic current draw in high-impedance bias networks |
| Junction Temperature (Tj) | 175°C maximum - allows reliable operation in industrial ambient conditions up to 125°C with derating |
| Temperature Coefficient (γZ) | −0.04 %/°C typical - enables predictable drift behavior for temperature-compensated reference designs |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), 2.0 mm diameter × 4.2 mm body length, orange body color with navy blue cathode band. Compatible with standard through-hole wave soldering and manual assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference node | Connected to regulated output or positive rail; reverse-bias terminal where stable voltage develops |
| 2 (Anode) | Low-side return path | Connected to ground or current-limiting resistor; completes shunt regulation loop |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise performance | Diode noise ~1/3–1/10 that of legacy HZ series - critical for audio preamps and precision instrumentation front-ends |
| Stable low-impedance regulation | 60 Ω dynamic resistance at 0.5 mA - maintains < ±10 mV output shift across 10–100 μA load changes |
| Wide operating temperature range | −55°C to +175°C storage; 175°C max junction - supports deployment in automotive engine control and industrial motor drives |
| Controlled zener voltage tolerance | ±0.2 V over 9.3–9.7 V range at 0.5 mA - eliminates need for post-assembly trimming in mid-accuracy references |
| Standard DO-35 footprint | Compatible with legacy board layouts and automated insertion equipment - no retooling required for replacement |
Applications
| Industrial Power Monitoring | Medical Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Monitoring DC bus voltage in PLC I/O modules with 12-bit ADC input. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 9.5 V reference for ADC VREF pin. Use Value: Low 60 Ω impedance prevents reference droop during sampling transients, preserving measurement accuracy within ±0.5 LSB. |
Use Scenario: Biasing photodiode amplifiers in portable pulse oximeters. IC Role / Device Role / Timing Role: Low-noise voltage reference for op-amp feedback network in transimpedance stage. Use Value: 1/10 noise vs. standard Zeners reduces baseline ripple, enabling detection of sub-μA physiological signals. |
| Automotive Cabin Control Panel | Test & Measurement Equipment Calibration |
|
Use Scenario: Regulating microcontroller supply rail in HVAC control head exposed to −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Temperature-stable shunt regulator for 9.5 V auxiliary rail powering display drivers. Use Value: −0.04 %/°C tempco limits reference drift to < ±30 mV over full range - avoids display contrast calibration loss. |
Use Scenario: Setting reference points in benchtop multimeter internal calibration circuitry. IC Role / Device Role / Timing Role: Primary voltage standard for 10 V range calibration against traceable standards. Use Value: Tight 9.3–9.7 V tolerance and low leakage (<1 μA) ensure repeatability within ±0.02% over 1000-hour stability tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5240BLT1G | Zener voltage 10 V ±5%, 17 Ω rd, SOD-123 surface-mount package | Higher precision but requires PCB redesign; unsuitable for through-hole legacy systems | Select when board space is constrained and reflow assembly is available |
| Vishay BZX55C9V1 | Zener voltage 9.1 V ±5%, 70 Ω rd, DO-35 package, higher noise than HZ-L series | Lower cost but 3× higher noise - acceptable only in non-critical power rails | Select only for non-analog applications where noise immunity is not required |
Compared with MMBZ5240BLT1G and BZX55C9V1, the HZ9C2-90-E delivers superior noise performance and tighter voltage tolerance in a drop-in DO-35 form factor - making it the preferred choice for analog signal chains where reference integrity directly impacts system resolution.
Availability
HZ9C2-90-E is available at Aetrix Electronics and suitable for industrial power monitoring, medical sensor signal conditioning, and automotive cabin control panel designs requiring stable component supply with guaranteed long-term continuity.
Supply support for HZ9C2-90-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series Zener diodes were developed specifically for low-noise, high-stability voltage reference applications in precision analog systems - addressing limitations of legacy HZ-series noise and impedance performance.
FAQ
What is the exact zener voltage range for HZ9C2-90-E at 0.5 mA test current?
The HZ9C2-90-E has a specified zener voltage range of 9.3 V (minimum) to 9.7 V (maximum) when tested at IZ = 0.5 mA, per Renesas REJ03G0182-0300 Rev.3.00 datasheet page 2. This 0.4 V window reflects factory binning for mid-range stability and is tighter than generic 5% tolerance Zeners.
Does HZ9C2-90-E support operation above 100°C ambient temperature?
Yes - the HZ9C2-90-E is rated for storage from −55°C to +175°C and has a maximum junction temperature of 175°C. At 100°C ambient, its 400 mW power dissipation must be derated to ~240 mW using the curve on datasheet page 4, enabling reliable use in engine bay or industrial enclosure environments.
Is the DO-35 package of HZ9C2-90-E compatible with automated through-hole insertion equipment?
Yes - the HZ9C2-90-E uses the standard DO-35 axial package (JEITA code GRZZ0002ZB-A) with 2.0 mm diameter and 4.2 mm body length, matching IPC-7351 guidelines for axial components. Its orange body with navy blue cathode band enables optical orientation detection in pick-and-place feeders.
How does the noise performance of HZ9C2-90-E compare to standard Zener diodes?
The HZ9C2-90-E achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners due to proprietary silicon planar junction processing. This is confirmed in the "Features" section of the Renesas datasheet and validated in low-noise op-amp biasing applications where broadband noise below 10 kHz must be minimized.
Can HZ9C2-90-E be used as a direct replacement for older HZ9C2 diodes?
No - HZ9C2-90-E belongs to the improved HZ-L series with lower noise and tighter voltage tolerance; legacy HZ9C2 parts lack the "-L" suffix and are not characterized for low-noise operation. Substitution requires validation of noise sensitivity and voltage drift in the target circuit, as electrical behavior differs meaningfully.
HZ9C2-90-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- HZ
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9 V
- Tolerance:
- ±2.22%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
HZ9C2-90-E FAQ
1.How can I place an order for HZ9C2-90-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ9C2-90-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HZ9C2-90-E reliable?
The price and inventory of HZ9C2-90-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ9C2-90-E is usually 5 days.
3.What payment methods are accepted for HZ9C2-90-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ9C2-90-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ9C2-90-E?
HZ9C2-90-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ9C2-90-E order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HZ9C2-90-E?
For technical support, including HZ9C2-90-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ9C2-90-E requirements.
6.How does Aetrix verify that HZ9C2-90-E is sourced from the original manufacturer or authorized distributors?
All HZ9C2-90-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HZ9C2-90-E meets industry standards.
7.What is the process for return or replacement of HZ9C2-90-E?
All HZ9C2-90-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ9C2-90-E, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HZ9C2-90-E part is unused and in its original packaging.
Return procedure for HZ9C2-90-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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